Experimental Physics and
Industrial Control System

Hi Emmanuel,

we have taken a similar approach as Rolf suggests, but using networked
power switches. It's an extra expense, but as we do a lot of work
remotely most of our computers at the telescopes (not just IOCs)
are on networked power switches now. You just log into the switch
it's connected to and power cycle.

Maren

Rolf Keitel wrote:

Hi Emmanuel,

As a last resort, in the cases where the IOC is not accessible via CA, we implemented for our (less expensive) VME crates a remote power cycle. The crate's power supply is switched off by an external +24V signal which is provided by a PLC or another IOC. Important is only that the external signal is ultimately controlled by an IOC which is different from the one you are resetting.

- rolf -

Ralph Lange wrote:

......

For other (aka less expensive) crates some labs have developed VME cards that can be remotely accessed and are able to pull the VME reset line (plus more functionality). That is not free: A separate card always uses an extra slot.

References:

EPICS for implementation of Remote Procedure call Mahajan Kirti

Re: EPICS for implementation of Remote Procedure call Andrew Johnson

Re: EPICS for implementation of Remote Procedure call S. Banerian

Remote IOC reboot Was(EPICS for implementation of Remote Procedure call) Emmanuel Mayssat

RE: Remote IOC reboot Was(EPICS for implementation of Remote Procedurecall) Allison, Stephanie

Re: Remote IOC reboot [was: EPICS for implementation of Remote Procedure Call] Ralph Lange

Re: Remote IOC reboot [was: EPICS for implementation of Remote Procedure Call] Rolf Keitel

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